Abstract

Introduction: Tibialis posterior tendon dysfunction is a common cause of foot pain and dysfunction in the middle aged patients. Initially, it presents as medial ankle pain and swelling, with or without a flexible flat foot, later progressing on to a fixed deformity. Operative management for the early stages of tendon dysfunction poses a significant workload on hospitals and physical burden on patients. We have evaluated non-operative management of early tibialis posterior tendon dysfunction (1).

Methods: This is a prospective study on patients with stage I and II tibialis posterior tendon dysfunction treated with a structured physiotherapy protocol. Twelve consecutive patients referred to a foot and ankle consultant with early tibialis posterior dysfunction from July 2008 were included in the study. The physiotherapy regime includes repetitive resisted active dorsiflexion, inversion, eversion, heel rise, and tip toe walking. The intensity of physiotherapy is progressively increased over the period of four months in four phases. Criteria for successful rehabilitation are ability to perform greater than ten single stance heel rises and tip toe walking for more than 100 yards. Patients who cannot achieve the expected progression were re-referred for surgical intervention. All the patients were referred for support with orthoses, however, only a few received the orthoses during the treatment period. The outcome was assessed using the validated outcome score Foot Function Index (FFI) before and after physiotherapy regimen.

Results: The study group consisted of 10 females and two males with 10 unilateral and two bilateral cases. The mean age was 59 years (48 to 79). The average number of physiotherapy visits was five. Prior to treatment the mean number of single stance tip toes performed by the patients was four. Out of 12 patients, ten successfully completed the rehabilitation. The mean FFI before rehabilitation was 55, which improved to 19 at the end of four months rehabilitation. On analysis using a paired t test 95% CI for mean difference: (25.07, 46.93) P < 0.0001. The improvement was consistent with all the three components of FFI (pain, activity and function) (p< 0.0001).

Conclusion: This study suggests early tibialis posterior tendon dysfunction can be treated effectively with structured physiotherapy.

Purpose: To investigate the outcome of tibiotalocalcaneal (TCC) fusion using the retrograde intramedullary nail (IMN).

Methods and results: We reviewed clinical and radiological outcome of 42 patients who underwent TTC fusion with a retrograde IMN in a single health region from 1996 to 2003. Out of 42 patients, four patients died of unrelated causes and two patients were lost to follow up. Finally, 36 patients (20 males, 16 females) were followed up. Mean age was 63 years and the follow up averaged 10 months. Degenerative arthritis (primary and post traumatic) and rheumatoid arthritis made up the majority of the preoperative diagnoses. Clinical outcome was assessed using the AOFAS hindfoot score and three independent observers reviewing radiographs.

Radiologically 22 ankles fused, three probably fused whilst 11 (30%) had evidence of non-union. The majority of subtalar joints failed to unite, reflected by the high rate of distal screw breakage. Primary bone grafting appeared to aid union however smoking, age and the use of an open approach did not seem to be significant factors. Other than non-union complications included two nail fatigue fractures, two deep infections, seven screw breakages, six wound problems and one fractured tibia. Post operatively the mean AOFAS score was 51, 25 patients were satisfied (of these 20% had radiological non-union) and 19 would undergo the same procedure again.

Conclusion: Despite a high rate of ankle and subtalar non-union most of the patients were satisfied with the procedure and would undergo the same operation again. Technical errors apart, the high rate of complications and non-union probably reflected the advanced nature of the disease process and deformity in this group of patients. Although IMN TTC fusion remains a viable option in the management of concurrent ankle and sub-talar joint arthritis, patients should be warned of the potential for non-union and high complication rates.

Purpose To investigate the outcome of tibiotalocalcaneal (TCC) fusion using the retrograde intramedullary nail (IMN).

Method We reviewed clinical and radiological outcome of 42 patients who underwent TTC fusion with a retrograde IMN in a single health region from 1996 to 2003. Out of 42 patients, two patients died of unrelated causes and four patients were lost to follow up. Finally, 36 patients (20 males, 16 females) were followed up. Mean age was 63 years and the follow up averaged 10 months. Degenerative arthritis (primary and post-traumatic) and rheumatoid arthritis made up the majority of the preoperative diagnoses. Clinical outcome was assessed using the American Orthopaedic Foot and Ankle (AOFAS) hindfoot score and with three independent observers reviewing radiographs.

Results Radiologically 17 ankles fused, three probably fused whilst 16 (33%) had evidence of non-union. The majority of subtalar joints failed to unite, reflected by the high rate of distal screw breakage. Primary bone grafting appeared to aid union however smoking, age and the use of an open approach did not seem to be significant factors. Other than non-union complications included two nail fatigue fractures, two deep infections, seven screw breakages, six wound problems and one fractured tibia. Postoperatively the mean AOFAS score was 51, 25 patients were satisfied (of these 50% had radiological non-union) and 19 would undergo the same procedure again.

Conclusion Despite a high rate of ankle and subtalar non-union, most of the patients were satisfied with the procedure and would undergo the same operation again. Technical errors apart, the high rate of complications and non-union probably reflected the advanced nature of the disease process and deformity in this group of patients. Although IMN TTC fusion remains a viable option in the management of concurrent ankle and subtalar joint arthritis, patients should be warned of the potential for non-union and high complication rates.